Type-writing machine.



Wn Sm ERELAND ARI) W. E. LIPPERT.

TYPE WRITING MACHINE.

APPLICATION HLED N0v.1a. 191s.

Patentedfiept. 23, 1919.

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ZY/AMff W. 6. [Miami W E. Lipperb w. s. IRELAND AND W E. LIPPERT.

TYPE WHITIIJG MACHINE.

APPLICATION FILED NOV. 18, I915.

Patented Sept. 23, 1919.

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W. 5. W. E. Lippcmt m S IRELAND AND W. E LEPPERT. TYPE WRHING MACHiNE APPLICATION FILED [HP/.18. iSEG.

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WARD S. IRELAND, OF STJLOUIS, MISSOURI, AND WALTER E. LIPPERT, 0F CINCINNATI,

OHIO, ASSIGNORS, BY DIRECT AND MESNE ASSIGNIEIENTS, TO,NATIONAL SHORT- HAND MACHINE COMPANY, OF ST.- LOUIS, MISSOURI, A'GOlhPOTlON 0F DELAWARE.

TYPE-WRITING MACHINE.

Specification of Letters Patent. I Patgmtegd Sept. 23, 191%.,

Application filed November 18, 1916; Serial No. 132,066.

To all whom it may concern:

Be it known that we, WARD S. IRELAND and WALTER E. LIPPERT, citizens of the United States of America, residents, respectively, of the city of St." Louis, State of Missouri, and ofCincinnati, in the county 7 fication.

- produce a strong, simple and accurate paper feeding deviceadapted to cooperate with the finger keys of .a shorthand machine, and adapted to advance the paper a fiixed distance during .eachlkey operation. To insure the desired accuracy, we preferably use a strip of paper? havingmarginal per-'- forations which arefformed at regular intervals throughout the length of the paper; and the paper feeding device preferably ineludes feed wheels having peripheral teeth ing device ofthi's kind is particularly adapted for use ina shorthand machine wherein adapted to-enter the perforations. The feed wheels advance a predetermined distance during each key operation, and since these wheels are interlocked in the perforated paper, the action of the paper feeding device is absolutely positive; thepaper being positively advanced a'fixed distance during each feeding operation. An accurate paper feedthe paper isto be fed step by step (line by line)" response to the kelp;

The preferred form of t v cludes a shearing device for cutting the paper into uniform sheets after it passes from the paper feeding device. The ob ect is to cut the paper at regularintervals and at points midway between lines of reading matter. Owing to its accuracy, our'paper feeding device will feed-the papenin such a manner that the cutting action will take place at the predetermined points between the lines, and this is very importanhfoi- 1f the action of the paper feeding device was unreliable or inaccurate, the shearing device operations. e invention in- Would be liable to cut through a line 'of characters instead of cutting between the lines. A further advantage of the new feed ing device is that it is well adapted to pull the paper along a paper straightening device, so as to uncurl or straighten the paper before feeding it from the machine. With the foregoing and other objects in view the invention comprises the novel construction, combination and arrangement of parts hereinafter more specifically described and illustrated in the accompanying drawings wherein is shown the preferred embodiment of the lnventlon, however, it isto be understood that the invention comprehends changes, variations and modifications which'come within the scope of the claims hereuntoappended.

Figure I isa plan View, partly in section, illustrating a shorthand machine embodying the features of our invention.

Fig. II is a longitudinal section of th .machine shown in Fig. I.

the printing and paper feeding devices.

1 Fig. IV is a detail view showing one of the paper feeding wheels and the presser member associated therewith.

Fig. V is a fragmentary view of the means ffor straightening the paper.

Fig] VI is. a vertical section taken approximately on the-line VI-VI, Fig. III.

Fig. VII is a horizontal, section showing the universal bar,- thedgey levers which operate said universal bar, and a portion of the ribbon feeding mechanism which is driven. bvsaid universal bar.

. Fig. VIII is a section taken approximately on the line VHI-VIII,-Fig. VII.

To illustrate the preferred form of the invention, wehave'shown a shorthand machine provided with a housing l, a type holder2 arranged in said housing (Figs. 1., II and EH). a type bar 3 secured in said tvpe holder; and an inking ribbon 4: ad- 'iacent the line of type. on said type bar 3. The paper passes a supply roll A, over a roller 5. under and. partially around a roller 5, in front ofand over a roller 6,

and then to the'paper feeding device where-- by it is unwound from the roll and fed through an opening 7 at the rear of the machine, see Fig. ll.

' The key actuated devices nreierahly insupported by a pivot member 12 located at the junctions of the lever arms 10 and ill.

The upper end or each. lever arm 11 is pro- A vided with a forwardly extending printing hammer 13 which lies adjacent the type 3, as shown most clearly in l jigs. l and H. Restoring springs 14*. (Fig. ll) tend to retain the key levers in engagement with an abutment 15.

When one or the finger keys 9 is depressed, the hey lever associated therewith turns about the axis of pivot members 12 and a printing hammer 13 moves toward the type 3, thereby forcing the paper and inking ribbon toward the type and printing one of the type characters on the paper. The key levers may be operated independently of each other, or any desired number of key levers may be operated simultaneously.

The universal bar associated with the key levers includes a transverse abutment holder 18 (Figs. ll, TH and VII) arranged in front of the series of lever arms ill, and provided with a yieldable abutment 19 whichengages all off said lever arms 11. The universal bar also includes a pair of arms 20 and 21 pivotally supported by the pivot member 12, arranged on opposite sides of lever arms 11, and secured near their upper ends to the transverse abutment holder 18. 22 designates a connecting member uniting the arms 20 and 21 of the universal bar, said connecting member being located at the rear of lever arms 11. 23 designates a restoring spring (Figs. H and TH) tending to retain the universal barin the position shown in the drawings. The transverse abutment 19, forming part or the universal bar-structure, is so arranged that the universal. bar will move in response to movements of any one of the key levers.

The inking ribbon 4:, which travels between the type bar 3 and printing ham mers 13, is referably a continuous strip of material ig. I) passing around guide spools 24:, and fitted to a feed spool 25, the latter being fixed to a vertical shaft 26. The means for driving the feed spool 25 comprises a ratchet Wheel 27 fixed to the shaft 26, an oscillatory pawl arm 28 loosely fitted to said shaft 26 and provided with a pawl 29 (Fig. VIII) which engages the ratchet wheel 27. A yieldable link 30, in

actor or characters.

ares-so the form of a helical spring, connects the universal bar to the pawl arm 28, see Figs. 1 and VII. During each key operation, the universal bar oscillates about the axis of pivot member 112, and a corresponding movement is imparted, through the medium of yieldable link 30, to the oscillatory .pawl arm 28, thereby advancing the ratchet wheel 27 one step. This ratchet wheel is secured to the vertical shaft 26, so that the ribbon feeding spool 25 which is fixed to said shaft, "will advance one step in response to each key operation.

The paper feeding device preferably comprises a rotatable shaft 32, a pair of feed Wheels 33 and 34: fixed to said shaft, a ratchet wheel 35 fixed to the feed wheel 34, and a pawl carrier 36 loosely secured to said shaft. 37 designates a pawl pivoted to the pawl carrier 36 (Fig. HT), and 38 designates a spring connecting said pawl to thepawl carrier. The spring 38 tends to force the pawl into engagement with the ratchet wheel 35, as shown by" dotted lines in Fig. H1. The arm 21 of the universal bar is provided with an extension 39 (Figs. III and VI) which cooperates with an arm lO on the pawl carrier 36. A spring ll secured to the universal bar, forces the arm 40 into engagement with the universal bar extension 39, said arm 40 being provided When a key is depressed, or when several keys are depressed simultaneously, the universal bar moves forwardly about the axis of the pivot member 12, and the pawl carrier 36 turns about the axis of shaft 32 so as to advance the ratchet wheel 35 one step, thereby turning the feed wheels 33 and 34 to unwind the paper and advance it one step. At the end of the paper feeding operation, the printing hammer or hammers 13 force the paper and inking ribbon toward the type toprint the selected char- Thereafter, the universal bar and key lever or levers, return to the positions shown in the drawings, and during this movement the paper feeding pawl 37 moves idly along the ratchet wheel 35. To. prevent the retrograde movement, the shaft 32 is provided with a ratchet wheel 35 (Fig. l) and a pawl 37 is fitted to said ratchet wheel.

To insure an absolutely positive feeding aeiaeeo action, the margins of the strip ofpaper are preferably perforated shown in Fig. I to receive the teeth wliieh project from the periphery of the feed wheels 33 and 3 1. These teeth are preferably tapered, as shown in Fig. 11 so that they will enter the perforations and mesh with the paper without posite sides of the teeth on the feed wheels,

so as to positively retain the paper in engagement with said wheels.

Each press'er arm 4:5 is preferably provided with two notches 50 and 51 (Fig, IV) adapted to receive a spring pressed detent 52. When the pressing device occupies its operative position (Fig. 1V) each presser member 15 is retained in engagement with the paper by a detent 52 which lies in .notch 50. In pplying a new roll of paper to the machine, the presser members a5 are shifted away from the feed wheels to an inoperative position wherein they will permit the paper to be fed, by hand, over the feed wheels. At this time, each presser member 45 is retained in its inoperative position by a detent 52 which then lies in a notch 51.

The means for straightening the paper preferably comprises a roller 53, journaled in the presser members 45,. and provided with an annular rib 53 adapted to'enter an annular groove 54" in a roller 54:. .The roller 54 preferably lies between the feed wheels 33 and 34, and it is rotatablysupported by hearing members 55. Since the paper is firmly coiled around the axis of the supply roll, it tends to return to a curly condition after passing from the roll. However, when the paper passes between the rollers 53 and 54: it is uncurled or straightened by the creasing action which takes place at said rolls. The middle portion of the strip of paper is forced into groove '54. by the annular r'ib 53', thus forming a reinforcing rib or ridge which stifi'ens the a paper and prevents it from recurling.

' After passing from the straightening de vice, the paper advances step by step to a shearing device, whereby it is cut into small uniform sheets. The shearing device we have shown (Fig. 11) includes a stationary blade 57 and a movable blade 58. The movable blade may be operated by any suitable automatic mechanism. The paper advances a parts engage each other.

fixed distance during each key operation, and the shearing device is so located that it will cut the paper between two lines of reading matter.

When the upper portion of the universal bar moves forwardly it positively pushes the pawl carrier 36 (Fig. ill) to insure the desired positive paper feeding action, and duringthe return movement of the universal bar, the pawl carrier is forced backwardlythrough the medium of spring 4:1, the latter beingsecured. to the universal bar. This spring 11 retains the-pawl carrier in engagement with the universal bar, thereby preventing noisy hammer blows which would occur if one of these parts was.

Slit

of this substantially universal joint, is that the spring 41 will yield to compensate for inaccuracies in the dimensions or location of the parts with which it is associated.

The printing elements herein shown are claimed in an application for patent filed by W. S. llrelandcn Nov. 18, 1916, Serial No. 132,0?6'. The key lever guide is claimed in an application filed by W. S. Ireland and W. E. liippert on Nov. 18, 1916, Serial No; 132,077. The universal bar is claimed in an application filed by W. S. Ireland and W. E. Lippert on Nov. 18,1916, Serial No. 132,018. The ribbon feeding mechanism and certain elements associated therewith are claimed in an application filed by W. S.

Ireland on Nov. 18, 1916, Serial No. 132,075.

The automatic cutting device is claimed in an application filed by W. S. Ireland on Nov. 18, 1916, Serial No. 132,071. The

paper straightening device'is claimed in an application filed by W. S. Ireland on Nov.

18, 1916. Serial No. 132,070.

We claim 1. In a typewriting machine adapted to receive a strip of paper having perforated margins, a paper feeding device comprising a rotatable shaft, a pair of feed wheels secured to said shaft, said feed wheels having peripheral teeth adapted to enter said perforated margins, a ratchet wheel secured to said shaft, a pawl arm for driving said ratchet wheel, and a universal bar for operating said pawl arm.

2. In a typewriting machine adapted to receive a strip of paper having perforated margins, a, paper feeding device comprising a rotatable shaft, a pair of feed wheels secured to said shaft, said feed wheels havher being provided with two notches, and a,

will? a a,

ing peripheral teeth adapted to enter said perforated margins, a ratchet wheel secured for said presser member, said presser memher being movable toward and away from said feed wheels, and a spring pressed detent for holding said presser member in its operative position.

4:. In a typewriting machine adapted to receive a strip of paper having perforated margins, a paper feeding device including feed wheels adapted to enter the perfora,

tions at said margins, a presser member for retaining the paper in engagement with said feed wheels, a pivotal support for said presser member, said presserimember being movable away from said feed wheels, and a spring pressed detent for holding said presser member in either its operative or inoperative position.

5. In a typewriting machine adapted to receive a strip of paper having perforated margins, a paper feeding device including feed wheels adapted to enter the perforations at said margins, a presser member for retaining the aper in engagement with the teeth of said eed wheels, a pivotal support for said presser member,,said presser memspring pressed detent adapted to enter either of said notches so as to hold said presser member in-either its operative or inoperative position.

6. In a typewriting machine adapted to receive a strip of pa or having perforated margins, a printing evice'for printing on the paper at points between the perforatlons,

a paper feeding device including feed'wheels havmg peripheral teeth adapts to enter the ieiaeao straightening device being efiective upon the operation of said feed wheels,

7. In a typewriting machine adapted to receive a strip of paper having perforated margins, a printing device for printing on the paper at points between the perforations, a paper feeding device including feed wheels having peripheral teeth adapted to enter the perforations at opposite sides of the printed matter, and a paper straightening device between said feed wheels, said paper straightening device being efi'ective upon the operation of said feed wheels.

' 8. In a typewriting machine adapted to receive a strip of pa er having perforated margins, a printing evicefor printing on the paper at points between the perforations, a paper feeding device including feed wheels having peripheral teeth adapted to enter the perforations at opposite sides of the printed matter, and a paper straightening device arranged to engage the paper at points between said perforations.

9. A typewriting machine having a paper feeding device including a key actuated universal bar, and a paper feeding device operable by said universal bar, said' paper feed- ;ing device including a plvotally supported pawl arm, said universal bar being adapted to engage said pawl arm to positively move the latter in one direction, and a spring for returning said pawl arm in response to a corresponding movement of the universal bar, said spring being arranged to retain said pawl arm in engagement with said umversal bar.

10. A typewriting machine having a universal bar, keys for operating said universal bar, anda paper feeding device including a pawl carrier slidably fitted to said universal bar, and a spring for retainin said pawl carrier in engagement with said universal bar.

WARD S. IRELAND. WALTER E. LIPPER'I. 

